melcher



(No Model.) 2 Sheets-Sheen 1. G. MELOHER.

PUMP. No. 343,827. Patented June 15, 1886.

(No Model.) 2 Sheets-Sheet 2.

G. MELGHER PUMP.

No. 343,827. Patented June 15, 1886.

HCL JQ GUSTAV MELCHER, OF DUSSELDORF, PRUSSIA, GERMANY.

PUMP.

SPBCIPICA'IIQIT forming part of Letters Patent No. new, dated time 15, 1885' Application filed February .8, 1886. Serial So. 192,398. ("No model.)

To all whom it may concern:

Be it known that I, Gusmv MnLonnR, residing at Dusseldorf, Prussia, Germany, have invented a new and Improved lump, of which the following specification is a full, clear, and exact description.

This invention relates to the manner of operating reciprocating pumps and animproved revolving valve, whereby the fluid will be discharged at an equal speed during the whole operation.

The invention consists of the various ele ments of improvement hereinafter more fully pointed out.

In the accompanying drawings, Figure 1 shows an end view, and Fig. 2 a side view, of two pumps, with the valve between the same. Fig. 8 is a horizontal section, and Fig. i a vcrtieal section at linea'rc, Fi .1. Fig. 5 is a section at line 2, Fig. 3. Fig. 6 is a section at line y, Fig. 3. Fig. 7 is a section of the valve and valve-chamber, showing a modification; and Fig. 8, a cross-section at line 71. n, Fig. 7.

Fig. 9 is a vertical section of a single pump,and

Fig. 10 a horizontal section at line in m, Fig. 9. Fig. 11 is a vertical cross-section at line 0 '0, Fig. 9, and Fig. 12 is an end view of this pump. The remaining figures represent details and modifications referred to in the fol lowing specification.

In Figs. 1 to 6, two pumps, 3 C, are arranged with the valvechamber S", containing the valve S, between them. The end of the valve-chamber supports the end of the driviugshaft \V, which receives its main hearing in the support lV. At the outer end oi said shaft a handle or pulley can be attached to cpera'te the same. Between the bearing.V'and the valveehamher S" a disk, N, is secured to the shaft W, provided with an annular groove, N, on its periphery, into which guideblocss 1) p, attached to the end of the plungers or pump-rods 1 1, work. This dish may be placed diagonally with the axis of the shaft, to give the necessary amount of motion. The pcculiar construction of this annular groove is more fully described l'lercinafter. The valve chamber S is conical, and is provided with the suction-pipe aat its small end, and with the dischargepipe i) at its larger end. The

valve S consists of a conical plug fitting into the casing, and is divided, through partition as, into two chambers, provided with openings S and S, communicating alternately with the passages B B and B B leading to the passages B 15 of the pump-cylinders C 0. The valve S is acted upon by a spring, to force the same into its casing and insure a tight fit, and as the discharge-pipe l; ac s upon the large end of the valve the pressure assists likewise to insure the tightn s of the valve. The end of the valve connected, through the stud K, with the end of the shalt \V, through which said val vc receives a rotating motion from said shaft W. shown in the drawings, the passages B B are closed by the valve S. By ro-' tating the valve in the direction of the arrow, Fi 1, the opening S comes in communication with the passage 33, and allows the fluid to be drawn from the pipe (1 into the pump 0; at the same time the opening S comes opposite the passage 13", and forms thus a communication between the pump-cylinder (1" and the discharge-pipe b. The openings S and S are of such dimensions that this communication is retained even by the rotation of the valve 8 until the plungers ll? 1 are moved in the opposite position, when the opening S will come in position to eon'nnunicato with the passage ii and the opening S with the passage 1;. ilhe annular groove in the disk N, through. which the plungcrs or pumprods P fl. are operated, forms. for one-half of the circumference part of a right-handed thread and on the other half of its circumference part of a left-handed thread, and through which the desi red reci p roentin g motion of the plungcrs l? l" obtained. The disk N is placed upon a circular or ball-shaped huh, \V, on the shaft 1V, whereby, by changing the position oisaid disk 31 upon this hub llm stroke of the plungers may be increased or diminished, as may he desired.

Figs. 5) to 12 represent a similar arrangement for a single pump, and instead of openings S into the interior chambers of the valve, correspomling recesses are made in the periphery of said val ve, operating with the passages lead ing to the pumpcylinder in a similar manner as above described.

Instead of a stud, K, connecting S with the shalt \V, a projection, K,

the valve may he provided at the end of said valve S, passing through the valve-easing, and eonnecting with the shaft V. (See Fig. 1.3.)

The disk N may be made cam-shaped on its periphery, (see Figs. 14. and 15,) or provided with a cam-shaped groove, u (see Fig. 16,) by which. the plungers are operated.

For single pumps the annular groove m in the periphery of the disk N can be made of one thread nearly the Whole length of the eirenml'erence, connected at the ends by n ehannel, 2 (see Fig. 17,) which represents the groove laid out in a. plane, and when, during the passage from o to v, the plunger is forced inward, and during the passage from n to '1 the plunger will be drawn outward.

I claim as my invention- 1. In combination with the plungers or 1 pump-r0ds P P, the disk N, provided with an annular groove, N, the guide-blocks p11, the shaft 6, and the rotating valve S, arranged to operate in the manner and for the purpose described.

2. The combination of the shaft V7, stud K,

l and cylindrical cone -shaped valve S with pumps 0 O and with the disk N, for operatl ing the hnigers of said. pumps, substantially as speeiheu.

l In testimony whereof I have signed this ing witnesses.

I GUSTAV MELCIIER r YVitnesses: l G. I. L TZr specification in the presence of zwo snhserih- 

